The Sinuses Within Lymph Nodes

question 61

Multiple Choice

The sinuses within lymph nodes

• A) surround clumps of lymphoid tissue called white pulp.
• B) contain macrophages living along a reticular fiber network.
• C) are separated from the bloodstream by a blood-node barrier.
• D) consist of star-shaped epithelial cells that secrete immune-boosting hormones.

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Definitions:

Chair Conformations

A specific, stable three-dimensional shape adopted by cyclic molecules such as cyclohexane, minimizing steric strain and offering two alternating conformations.

Axial Ethyl

Refers to an ethyl group attached perpendicular to the plane of a molecule, especially in cyclic compounds.

Equatorial Ethyl

A term not typically used in standard chemical nomenclature and could refer to the placement of an ethyl group in an equatorial position on a cyclohexane ring, emphasizing its spatial orientation.

Chair Conformation

A three-dimensional geometric representation of cyclohexane molecules resembling a chair, minimizing strain.